Two-piece demountable rim



Feb. s, u1927.

F.` E. PETERSQN TWO-PIECE DEMOUNTABLE RIM Patented Feb. 8, i927.,

FRANK E. rnrnnson, or ROY, MONTANA.'

TWO-PIECE DEIVIOUN TABLE 'RIIVL Application mediteren' 2o, i926. serial No. 98,202.

ing sections adapted to retain the beads .of

l the tire ,in combination with means for easily moving said sections apart to remove or attach a tire.

A further object of the invention is to pro vide-in such a device a pair of telescoping clamping sections and a lever carried by one of the sections adapted to' readily prythe saine apart and to moreover lock the sections together when the tire is. mounted on the rim. There hasbeen a -great deal of de-v velopment in rims ofvarious kinds, t'herproblem being; to enable the motorist. fto more easily attach or lremove a tire, butto myV knowledge all such devices require vthe femployiiient of tools or a great amount-of Vef-L fort to compress a broken rim member,

whereby the tire may be pulled thereover.'V

With my devicethe two teles'coping` sections 4may be pried or canimed apart with little exertion andinay be readily locked together whenthe tire is mounted thereon. l

I Ther above and other objects of the, inven tionwill be apparent from .the following description' made in connection with the Vac.-

'companying' drawings, wherein like charac tersrefer to similar parts throughout the Fig. 11 is a side elevation of the assembled device.` f f Fig. 2 is a cross section ona larger scale taken on the line 2 2 of Figzl.

Fig. 3 is a fragmentary inner plan view showing' the mechanism for separating and loc-kingqthe rim sectionstogether, and

Fig. 4L is ya fragmentary inner plan view showingthe seating of a portion of the sections and one-of the upstanding lugsfor attachment to the felly ofthe wheel. .K

In the preferred form 'of the invention a pair 4of telescoping annular rim sections are provided, theinner section 5 having' an an- 'nulargtire abutting ange 5 'at oneA side thereof and'provided with a pair of oppoits opposite edge.

are abutting aangaf 'u wiii'ib'eharmattan 1 the outer surface of the section 5 is vtaperedslightly f i'omthe tiij'eabutting iange toward Jghe rimV comprises an annularbody member iorming a tireseat having;` the annulartire -The .outer section of Y abutting flangea atene side thereof,-and. i

y having its inner surface.,which` is adapted to be' seated against 'section 5*, tapered slightly from its unflanged edge toward the tire abutting iaiig'e 6a. It will'be apparenti, that when sections and G aretelescoped the-saine will be wedged-tightly together., V

Outer section 6 carriesthe usualci-rcumfereiitially spaced upstanding` eyesor .lugs 7 through which bolts are .adapted v.to be passed to secureV the rim tothe fellyfof the i wheel `in the usual manner. "Innersection 5 I is provided with a pluralityl of circumferentially, spaced wedgel shaped recesses 5d` to accommodate the base portions of eyes 7, whereby thev sections 6 telescoped together. Y

Substantially L-shaped levers .8. are pro! vided hingedto inner section 5, vbv lthe manipulation of which the two'rim sections may-be pried apart and may also be locked and 7 may be snuglyV together. In thedrawinpfs the4 device is y shownA equipped with two Vof these levers oppositely disposed ,on the ri'mmalthough actual practice, y of course,.anyl desirable number may beused. 'Y Levers 8 are shown pivoted between transversev lugs 9 disposed .at opposite sides of each 'of the;apertura-esitib in the innerrim section. rvThe shorter arm of each of the levers pii'oiectsthrough one of lsaid apertures 5b and when the'riin sections are telescoped fits snugly within the groove 5 provided" inthe tire-abuttinglange carried byinner section 5. ltwillf'be `seen that the 'shorten Vor locking Yarm of -rlever yt5, therefore,fis"interposed between .tire labut,-

ting fiangea and the adjacent edge of outer y or tire carrying section 6. The longer arm `of each of levers8 terminates in anV outwardly bent locking portion 8b adapted toV v vresiliently engage one ofthe iianges l0V on gether when they' vare telesceped` The aire,

icas

pressure onV the beads of the `tire (see Fig. f

2') 'ofcourse tends to force they two sections apart, thereby'iirnily locking the 'part-s. to-

.gether' and 'causinga tight Veifigagement be-v sitely Vdisposed apertures 5b adjacent said .A

tween flange V10 and locking liook".

PTov accommodate the valve of the tire a transverse slot 11 is forined'inV the unflanged edge of section 5 and a similar slot 12 formed in the unflanged edge of section 6. These slots are adapted to register to leave an aperture'for the valve as shown in Fig. 3 when the two riin sections are telescoped.

Operation. The operation is probably obvious from the foregoing description but may be briey summarized as follows: v

Assuming that the tire X is mounted on y the rim as illustrated in Fig. 2, with the secpreferably sufficient resiliency in said hooks to permit .themto be sprung out with a tool if .so desired. Then 'levers 8 are swungY inwardly it will be obvious that the unflanged .edge of outer section 6 willV be'engaged by the loc-king arms of the levers and the tight engagement between the sectionswill be Y with their flanges l0.

edge of-section 5 prevent Vthe `broken` section 6 which forms the, seat for thetire being moved transversely of section 5 as indicated in the dotted lines in Fig. 2. The Ysections' are entirely'separated, after which the tire may be readily removed from section 6. v

n In mounting the tire upony the rim, the operation is thereverse of the above, Vthe tire first being slid upon section 6 and the inner Section5 telescoped'ewithin outer section 6. The sections will then be locked'together before the tireris inflated by forcing the` locks 8l outwardly' to engage the locking flanges 10. Then upon inflation of the tire, tight engagement is made between the interengaging .locking parts. It will alsobe noticed that the working arinV of the lever is forced flushagainst its seat 5F, thus preventing the lochingends 8b from disengagement The wedge shaped'bases of lugs 7v engaging'therecessed portions 5d of the unflanged creeping one upon the other. vit will also be noticed that the lugs 7 are rigid with" the outer section 6, thereby preventing the rim from creeping Vupon the felly.

From the above ydescription it will be seen that I have invented a two-piece telescoping tire rim comprising extremely few parts and adapted to permit a tire to be mounted Vor detached therefrom withvery little exertion and nfitlioutther assistance of any tools. The rim is adapted to fit standard 'wheels and to be carried in the manner of most deniountable'rims.

It will of course'be understood that various changes may be made in the form, de-

Vvsections from Vside thereof said inner telescoping section provided with an annular tire abutting flange at one side thereof, and ineaiisinount ed on one of said sections adapted to be forced outwardly against the side of saidoth r section to pry lsaid sections apart when telescoped.

i 2. A tire rim comprising inner and outer telcscoping sections, said outer telescoping section affording a tire seat andrprovided gif:

with an annular tire abutting flange at one sideV thereof, said inner telescoping .section having an annular tire abutting flange at one y side thereof, and means mounted on saidin- Y nei' section and extending therethroughfor engaging said outer section to pry Ysaid sections apart when telescoped.

3. A tire rim comprising innervand outer telescoping sections, said outerjtelescoping section affording a tire seat and provided with an annular tire abutting fiange at one sid-e thereof,'said inner telescoping section comprising. an Vannular tire abutting flangeY at one side thereof and means hinged to said jnner section ,and interposed between said inner section and said outer section to pry said sections apart when telescoped.

e. The structure set forth in claim 3 and said means alsoV comprising a locking inembei' adapted to engage said outer section to lock said sections together when in telescoped position.

5. A tire rim comprising inner and outer telescoping sections, said outer telescoping section affording a tire kseat and vprovided with an annular tire abutting flange at one side' thereof, said inner teelescoping section ilo Y comprising an annular tire abutting,I flangeV at one side thereof and a-lever hinged to said inner section Yand-having its` working end disposed between the flange of said inner section and the inner edge of said outer sectionl and normally disposed flush against said inner section and capable of being swung to pry said sections apart.

6. A tire rim comprising inner and outer telescoping sections, said outer telescoping section affording atire seat and provided Ywith an annular tire abutting'llange at' one sid-e thereof, said inner telescoping section` comprising an annular tire `abutting flange.

one side thereof-and having an aperture therethrough Y adjacent said tire abutting ange and a lever passed through'said aperture and hinged to said inner section .having a working arm adantedto lie 'liusli with said tire abutting fiange when atire is heldrby a said rim and adapted tobe swung to pry said sections apart. a y A 7. The structure set forthin claim 6 and resilient means adjacent the handle end of said lever adapted to engage said outer section to lock said sections together Whentelescoped. Y l

8. A tire rim comprising inner and outer telescoping sections, said outer telescoping section affording a tire seat and provided with an annular tire abutting flange at one slde thereot, said inner telescoping Asection having an annular tire abutting flange at the out-er side thereof, a lever pivoted to said inner section and having` one of its ends eX- tending 'therethrough adaptedrto normally lie against the `tire abuttingy flange of said 'inner section andto be swung against said outer section to pry said sections apart, the opposite endof said lever being adapted to section affording a `tireV seat, co-operating' means on said inner andy outer sections adaptedto engage to prevent said sections from revolving relatively in each other,V

means extending through said inner section adapted to engage said outer section to pry said sections apart When telescoped, and means for locking said sections 1n telescoped position.

nature.

FRANK E. PETERSON.v

In testimony. whereof he does affix his sig- 

